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Abstract:

This study focuses on the description of a compound trace fossil from the Cretaceous of the Neuquén Basin, Argentina. This structure comprises two discrete ichnotaxa: Protovirgularia cf. dichotoma M'Coy, 1850, and Protovirgularia cf. rugosa (Miller and Dyer, 1878). Open nomenclature is chosen due to some differences from the ichnospecies diagnoses. The compound trace as a whole is the product of locomotion and resting behaviors (repichnia and cubichnia); this is not questioned but discussed. The inferred producer is a deposit-feeding palaeotaxodont bivalve, which belongs to a taxonomic group almost unknown and not yet reported in the Neuquén Basin. The sample was taken from rocks interpreted as being deposited in a tide-influenced,marginalmarine setting, corresponding to the uppermost section of the Agrio Formation. This also represents one of the first cases of a compound trace fossil described for the Neuquén Basin. © Taylor & Francis Group, LLC.

Registro:

Documento: Artículo
Título:Protovirgularia dichotoma-protovirgularia rugosa: An example of a compound trace fossil from the lower cretaceous (Agrio formation) of the Neuquén basin, Argentina
Autor:Fernández, D.E.; Pazos, P.J.; Aguirre-Urreta, M.B.
Filiación:Departamento de Ciencias Geológicas, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Int. Güiraldes 2160, C1428EGA, Pab. II, Ciudad de Buenos Aires, Argentina
Palabras clave:Agrio formation; Argentina; Compound trace fossil; Cretaceous; Ichnology; Lockeia; Neuquén basin; Protovirgularia; bivalve; Cretaceous; ichnology; nomenclature; paleoenvironment; taxonomy; trace fossil; Argentina; Neuquen Basin; Bivalvia; Lockeia; Protovirgularia dichotoma
Año:2010
Volumen:17
Número:1
Página de inicio:40
Página de fin:47
DOI: http://dx.doi.org/10.1080/10420941003659436
Título revista:Ichnos:an International Journal of Plant and Animal
Título revista abreviado:Ichnos
ISSN:10420940
CODEN:ICHSE
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10420940_v17_n1_p40_Fernandez

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Citas:

---------- APA ----------
Fernández, D.E., Pazos, P.J. & Aguirre-Urreta, M.B. (2010) . Protovirgularia dichotoma-protovirgularia rugosa: An example of a compound trace fossil from the lower cretaceous (Agrio formation) of the Neuquén basin, Argentina. Ichnos:an International Journal of Plant and Animal, 17(1), 40-47.
http://dx.doi.org/10.1080/10420941003659436
---------- CHICAGO ----------
Fernández, D.E., Pazos, P.J., Aguirre-Urreta, M.B. "Protovirgularia dichotoma-protovirgularia rugosa: An example of a compound trace fossil from the lower cretaceous (Agrio formation) of the Neuquén basin, Argentina" . Ichnos:an International Journal of Plant and Animal 17, no. 1 (2010) : 40-47.
http://dx.doi.org/10.1080/10420941003659436
---------- MLA ----------
Fernández, D.E., Pazos, P.J., Aguirre-Urreta, M.B. "Protovirgularia dichotoma-protovirgularia rugosa: An example of a compound trace fossil from the lower cretaceous (Agrio formation) of the Neuquén basin, Argentina" . Ichnos:an International Journal of Plant and Animal, vol. 17, no. 1, 2010, pp. 40-47.
http://dx.doi.org/10.1080/10420941003659436
---------- VANCOUVER ----------
Fernández, D.E., Pazos, P.J., Aguirre-Urreta, M.B. Protovirgularia dichotoma-protovirgularia rugosa: An example of a compound trace fossil from the lower cretaceous (Agrio formation) of the Neuquén basin, Argentina. Ichnos. 2010;17(1):40-47.
http://dx.doi.org/10.1080/10420941003659436